Ah, I see. It looked very much like a submarine, and since a WW1 sub was just discovered off the coast of one of Holland's islands, it was on my mind.

B&W is great for those pictures where the colors and color noise are all over the place. My parents had me shoot their 25th wedding anniversary dinner in a badly lit restaurant (lots of different kinds of light), so unless I turned the pictures into B&W, they resembled a rainbow more than anything else. It works really for this picture too, adds to the mood of the place.